Grain decorticating and grinding machine.



PATENTED DEC. 20, 1904.

' J. H. P. L. HARTMANN.

GRAIN DBGORTIGATING AND GRINDING MAGHINE.

APPLIUATION .FILED NOV. 28. 1902.

2 SHEETS--SHEET 1.

N0 MODEL.

PATEN'TBD DEG. zo, 1904.

J. H. I. L. HARTMANN.

GRAIN DECORTIGATING AND GRINDING MACHINE.

APPLICATION FILBD.NOV.28.1902.

NO MODEL.

- a specication.

No. F(478,193.

Patented December 20, 1904.

PATENT OEEICE.

JOHANN HEINRICH FRIEDRICH LOUIS HARTMANN, OF HAMBURG,

GERMANY.

GRAIN DECORTICATING ANDGR|NDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 778,193, dated December20, 1904. Application filed November 28, 1902. Serial No. 133,102.

To all whom/ it may concern:

Be it Aknown that I, JOHANN HEINRICH FRIEDRICH LoUIs HARTMANN, a subjectof the German Emperor, and a resident of Ham burg, Germany, haveinvented certain new and useful Impifovements in Grain Decorticating andGrinding Machines, of which the following is The present inventionrelates to improvements in grain decorticating and grinding machines forremovingthe cuticle or outer hull. from cereals and the like, and moreparticularly refers to that class of decorticating-machines in which asuitable 'decorticating or` grinding drum, roughened or provided on itsouter periphery with a suitable decorticatingsurface, revolves in asuitable casing and cooperates with a suitable stationary grindingsurface or shell wholly or partly encircling or surrounding the saiddecorticating-drum, the latter and the stationary grinding-drum beingset lat such distance apart as to give the requisite trituration and torasp off the cuticle or hull from the grain, &c., without Inashing thelatter.

The improvements relate especially to the' formation, construction, andarrangement of the stationary grinding-shell and to the means foradjusting the same; and with this end in View my invention consists incertain novel features of construction and combinations of parts, aswill be hereinafter fully described,

and pointed out in the claims, with reference to the accompanying sheetof drawings, in whichj Figure 1 is a vertical cross-section of adecorticating and grinding machine made in accordance with and embodyingmy invention; and Fig. 2 is an elevation of the machine as it appearsafter the removal of the front wall ofthe machine-casing, the undulatedgrinding-,shell for the upper decorticating-drum being broken away andthe outer adjustingbars for the said grinding-shell removed in order toshow .its inner tubular supportingbodies, which are shownA partly insection.

j Similar letters refer to similar parts throughout both figures.

In the example shown two revolving horizontal drums a and a2, faced withsuitable decorticating-surfaces and 52, respectively, are mounted withtheir shafts c and c2 in a suitable casing d, provided with a plurality.of hinged doors g, giving or allowing access to the interior of thesaid casing. At the top of the casing is a suitable feeding-hopper e,provided with a feed-roller f of any wellknown construction,fand at thebottom of the casing a suitable outlet e/ lfor the decorticated grain,&c. t

Between the two decorticating-druinsa and a2, preferably arranged oneabove the other a suitable distance apart, there is arranged a vgrating7L, forming the vfront end wall of a chamber 7l. This chamber is incommunication through an outlet la with a ventilator or vother suckingdevice (not shown in the drawings) adapted to suck o, through thegrating 7L, chamber c', and outlet in during the operation. of themachine, the hulls, dust, &c.

In front of the drum a is arranged a grinding-shell Z', -consisting ofany suitable elastic or iieXible materialsuch as leather, emerycloth,and the vlikeand being placed in such ,an undulated trace around thedrum ce that the operative decorticating-faces are formed.

by the facing 5' of the drum a and by the ridges-that is to say, thepoints of the undulated grinding-shell Z/ which are nearest to the saiddrum cb' b. The parts or faces of the Vgrinding-shell Z which are remotefrom the drum and which form the troughs or depressions between each tworidges remain inoperative.` To retain the flexible grinding-shell Z inthe desired undulated form or position,

tubular supporting-bodies m', preferably of semicircular cross-section,are inserted into the inner depressions of the said grindingshell, whileinto the outer depressions of such shell are placed suitably-shaped barsn', or, in other Words, the flexible grinding-shell Z is alternatelywound between inner and outer supporting-bodies of 'suitable form andshape. The position of the bars n', and consequently the spacingdistance between the ridges of the grinding-shell Z and the drum a maybe properly adjusted by means of screw-threaded adjusting-spindles 0',working in suitable nuts interior of the bodies m.

of a cross connection p, attached in any suitable manner to the walls ofthe casing (Z. The walls fa of the hollow bodies m', supported by theside walls of the casing (Z in any suitable manner, may be perforated inorder to allow a part of the dust produced during the decorticatingoperation to enter or to be sucked into the interior of the hollowbodies m and carried away through a suitable conduit o by means of aventilator or the like in communication with said conduit and the As theventilator device to be connected with the exhaust-conduit e may be ofany well-known construction, it is not shown in the drawings.

One end or edge, preferably the upper one, of the grinding-shell Zl isattached to two or more screw-threaded adjusting-spindles 1", suspendedfrom. a suitable cross connection t of the casing and adapted to beadjusted therein as to height or position by means of nuts s. When thecross and guide bars a have been somewhat removed by loosening orscrewing back the spindles d, the grinding-shell Z is free to be drawnupward. This may be effected by raising the screw-spindles o" by meansof the nuts s. As the grinding-shell is drawn upward other parts of itssurface will come into the operative position opposite to the drum a Z,or, in other words, other parts of the surface of the grinding-shellsurface are caused to form the operative ridges and may be secured insuch position by again screwing' home the bars a or their spindles 0,respectively. Thus worn-out or chafed parts of the grinding-shell. maybe replaced by adjacent fresh or sound parts and the whole surface ofthe grinding-shell step by step used for the grinding operation. Afterthe whole inner surface of the grinding-shell has been worn out thegrinding-shell Z may be reversed and its outer surface used up in thesame manner.

The grinding-shell Z2 shown in connection with the lowerdecorticating-drum Z2 Z2 c2, its supporting, guiding, and adjustingmeans m2 n2 02 p2 r2 s2 Z2 a2 e2 are of the same form, construction, andarrangement as that described in connection with the grinding-shell Z,and need, therefore, no further detailed description.

Having fully described my invention, what I claim, and desire to secureby Letters Patent, is-

l. In adeeortieating-machine, the combination with a decorticating-drum,of a plurality of supporting-bodies radially mounted in close proximitythereto, and a flexible d ecorti cati ngbody interwoven between saidsupports.

2. In a decortieating-machine, the combination with adecorticating-drum, of a plurality of adjustable supports radiallymounted in close proximity thereto, a hollow support mounted betweeneach adjustable support, a perforated wall in each hollow support, and aflexible decortieating-body interwoven between the supports so as to liebetween the adjustable supports and the drum.

3. In a decorticating-machine, the combination with adecorticating-drum, of a plurality of adjustable supports parallel tothe axis ofthe drum, a hollow parallel support between each adjustablesupport, a perforated wall in each hollow support, a flexibledecorticatiiig-body interwoven between the hollow and adjustablesupports and adapted to lie between the adjustable supports and thedrum, and means for adjusting the flexible decorticating-bmlytransversely to the supports.

4. In a decorticating-machine, the combination with a casing and arevoluble decorticating-drum mounted therein, of a support fixed in saidcasing, a fiexible decorticatiiig-body adjustably secured to saidsupport, a plurality of adjustable supports mounted radially to the axisof the drum aud adapted to hold the flexible body in contact with theperiphery of said drum, and a plurality of hollow supports mountedbetween the adjustable supports and between the periphery of the drumand a portion of the fiexible decorticati11g-body.

5. In a decorticating-machine, the combiuation with a casing and arevoluble decortieating-drum mounted therein, of a support fixed in saidcasing, a flexible decortieating-bmly adjustably secured at one end tosaid support, a plurality of adjustable support-s mounted radially tothe axisl of the drum and adapted to hold the decorticating-bod y incontact with the periphery of the drum, a plurality of corered hollowsupports mounted between the adjustable supports parallel thereto andbetween the periphery of the drum and a portion of thedecorticating-body, and a perforated wall between the drum and eachhollow support.

JOHANN lllllNltlCll lllillllililCll LOUlS llll'lhilAh'N.

Witnesses:

MAX Knmlrnu, OTTO lV. HnLLMuIou.

IOO

